MB39A107 データシートの表示（PDF） - Fujitsu

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MB39A107

DC/DC Converter IC for Charging Li-ion Battery with Synchronous Rectifier

Fujitsu 

MB39A107

s BLOCK DIAGRAM

OUTC1

3

+INC1 5

−INC1 4

IOFA1 6

<Current Amp1>

+

×25

−

Offset adjustment

VREF

−INE1 8

+INE1 7

<Error Amp1>

−

+++

4.2 V

FB1 9

−INE2 14

OUTC2 10

+INC2 12

−INC2 11

+INE2 13

<Current Amp2>

+

−×25

VREF

<Error Amp2>

−

++

FB23 15

−INE3 16

OUTD 17

<SOFT>

VREF

10 µA

CS 18

<Error Amp3>

−

++

4.2 V

CT

45 pF

+INUV

2

<UV Comp.>

+

−

4.05 V/4.20 V

VCC

1

<−INE Comp.>

−

+

3.92 V/4.00 V

VB Reg.

(6.0 V)

30 VB

29 CB

<PWM Comp.>

+

+

−

−2.5 V

−1.5 V

Drv

-1

28 OUT-1

27 VS

Drv

-2

26 OUT-2

Drv

-CP

24 OUT-CP

25 PGND

<OSC>

19

RT

H : UVLO, UV release

UVLO

VB

UVLO

VREF

UVLO

Current Amp1

ON/OFF

VCC

23 CTL-2

4.2 V

bias

<REF>

<CTL>

22 CTL-1

DC/DC

ON/OFF

VREF

5.0 V

20

VREF

21

GND

5

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